Stereotype-plate holder



(Model.)

A. OVEREND.

STBREOTYPE- PLATE HOLDER. No. 252,694. l Patented ML2/1,1882.

WITNESSBS: 1 INVBNTOR:

, 'l 9 /v'z' ai MMM ATTORNEYS. y

UNITED STATES PATENT I'TFICE.`

ANDREW ovEREND, or PHILADELPHIA, PENNSYLVANIA.

-STEREOTYPE-PLATE'HOLDEFL SPECIFICATION forming part of Letters Patent No. 252,694, dated January 24, 1882.

Application tiled October 12, 1881. (Model.)

To all whom tt may concern:

Be it known that I, ANDREW OVEREND, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Stereotype-Plate Holders, ot' which the following is a specification.

My invention consists of a metallic stereotype-block ofimproved construction, ot' improved means for holding the plates upon a stereotype-block, of a graduated gage-block for fixing or determining the margins, and of certain details of construction, all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part of this specitcatiou, in which similar letters of reference indie ite corresponding parts in all the figures.

Figure 1 is a plan view of my new and improved stereotype-plate holder. Fig. 2 is across-section of the same, taken-on the line w ot' Fig. l. Fig. 3A is a similar section taken on the line y y of Fig. 1. Fig. 4 is a perspective View ot' one of the plate clamps, and Fig. 5 is a perspective view ofthe gage-block.

The block A iscast of any suitable metal, and its upper surface is formed with the slots or incisions a, b, c, and d, in which the clamps B are moved to and from eachotherforclamping and releasing the plate E by means of the right and left handI screw-rods D D, which pass through the block from edge to edge and 1 lthrough the clamps, as shown in Fig. 2. The block is also formed with the incision or slot e, in which the gage-block C is placed, and with the slot fat the opposite end, in which the end clamp, F, is placed, which latter is moved to and from the plate E by the screw-rod G, and in the side of the block, near the end in which the gage-block C is placed, is formed the notch or slot g, in which the head of the sliding pin H rests, which pin is forced forward by the coiled spring h to engage with the holes t' t' in the gage-block for holding the gage-block in any position for holding the plate so as to leave the desired width of margin.

Upon one end ofthe right and left hand screw-rods D D and of the screw-rod Gr are fixed the pinions d el and g', which rest in the channels J J, formed upon two sides of the block, and which are adapted to be turned by a suitable hand-rack for moving the clamps to engage or release the plate. These pinions are formed with the fixed washers 'or offsets j j upon their sides, so that when the cogs become battered from long use the ends thereof' will not come in cont-act with the edges of the block' and interfere with their revolution.

The upper surface of the block, upon whiclr will be forc'eddown into thenotches orgrooves ofthe block, and the edges or teeth ot' the corrugation impressed into the metal of the plate, (which is always softer than the block,) and thus prevent the platefrom slipping. The edges of the clamps are also roughened, ai shown at k in Fig. 4, for taking firmer hold upon the beveled edges of the plate when forced against it by the screw-rods.

The powerot' the four screws'instead of two is an advantage, in that they will fasten tigh ter with half the force and will open the catches the same distance with half the strokes of the ratchet. Consequently there is only halt the danger of bruising and battering the plates, and the releasing of the plate is accomplished in one-half the time, and by using springbolt v,H or other device for holding the gage-block C, instead of a screw, saves the further use ot' y the ratchet and vthe danger of battering the plates by the slipping of the ratchet.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. The combination, with the block A, hav ing slots e g, and the gage-block G, having holes t', of the headed piu H, pressed by a coiled spring, h, and having a reduced end to enter one of the holes t', as and for the purpose specitied.,

2. In combination with a stereotypeblock, the right and left hand screw-rods D D and the clamps B B, substantially as and for they .purposes set forth.

3. The stereotype-block A, formed with theL slots a, b, c, d, @,f, and g, in combination with the simultaneously-moving clamps B, clamp F, and gage-block C, substantially as and for the purposes set forth.

ANDREW OVEREND. Witnesses:

WILLIAM J. MELLON, THos. HARRISON.

IOO 

